Added Vim modeline to Scheme template.
Adjusted function names and limited export list for new project structure.
Added appropriate INCLUDE expressions.
Made all definitions abstract.
Converted main unit to module.
Commented out definitions that used SQLite directly.
Added web module imports and INIT proc to standalone code.
Added abstract cav-web module and its implementations, cav-web-spiffy
and cav-web-fcgi.